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Differential D2987

stringutil: add function to pretty print an object
ClosedPublic

Authored by indygreg on Mar 30 2018, 5:16 PM.

Details

Reviewers
durin42
Group Reviewers
hg-reviewers
Commits
rHG2f859ad7ed8c: stringutil: add function to pretty print an object
Summary

This is inspired by the pprint() module/function (which we can't
use because the output is different on Python 2 and 3 - namely the
use of b'' literals).

We hook it up to hg debugwireproto for printing the response to
a wire protocol command.

This foreshadows future peer work, which will support decoding
CBOR responses into rich data structures.

Diff Detail

Repository
rHG Mercurial
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

Event Timeline

indygreg created this revision.Mar 30 2018, 5:16 PM
durin42 added a subscriber: durin42.Apr 3 2018, 12:42 PM
durin42 added inline comments.
mercurial/utils/stringutil.py
40

Why this instead of pprint.pformat?

indygreg added inline comments.Apr 3 2018, 12:53 PM
mercurial/utils/stringutil.py
40

Because of differences with b'' in Python 3 :/

durin42 added inline comments.Apr 3 2018, 12:56 PM
mercurial/utils/stringutil.py
40

😭

durin42 accepted this revision.Apr 3 2018, 12:56 PM
This revision is now accepted and ready to land.Apr 3 2018, 12:56 PM
Closed by commit rHG2f859ad7ed8c: stringutil: add function to pretty print an object (authored by indygreg). · Explain WhyApr 3 2018, 12:58 PM
This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Diff 7561

mercurial/debugcommands.py

del args['PUSHFILE'] del args['PUSHFILE']
res, output = peer._callpush(command, fh, res, output = peer._callpush(command, fh,
**pycompat.strkwargs(args)) **pycompat.strkwargs(args))
ui.status(_('result: %s\n') % stringutil.escapedata(res)) ui.status(_('result: %s\n') % stringutil.escapedata(res))
ui.status(_('remote output: %s\n') % ui.status(_('remote output: %s\n') %
stringutil.escapedata(output)) stringutil.escapedata(output))
else: else:
res = peer._call(command, **pycompat.strkwargs(args)) res = peer._call(command, **pycompat.strkwargs(args))
ui.status(_('response: %s\n') % stringutil.escapedata(res)) ui.status(_('response: %s\n') % stringutil.pprint(res))
elif action == 'batchbegin': elif action == 'batchbegin':
if batchedcommands is not None: if batchedcommands is not None:
raise error.Abort(_('nested batchbegin not allowed')) raise error.Abort(_('nested batchbegin not allowed'))
batchedcommands = [] batchedcommands = []
elif action == 'batchsubmit': elif action == 'batchsubmit':
# There is a batching API we could go through. But it would be # There is a batching API we could go through. But it would be

mercurial/utils/stringutil.py

_DATA_ESCAPE_RE = remod.compile(br'[\x00-\x08\x0a-\x1f\\\x7f-\xff]') _DATA_ESCAPE_RE = remod.compile(br'[\x00-\x08\x0a-\x1f\\\x7f-\xff]')
def escapedata(s): def escapedata(s):
if isinstance(s, bytearray): if isinstance(s, bytearray):
s = bytes(s) s = bytes(s)
return _DATA_ESCAPE_RE.sub(lambda m: _DATA_ESCAPE_MAP[m.group(0)], s) return _DATA_ESCAPE_RE.sub(lambda m: _DATA_ESCAPE_MAP[m.group(0)], s)
def pprint(o):
durin42Unsubmitted
Not Done

Why this instead of pprint.pformat?

durin42: Why this instead of pprint.pformat?
indygregAuthorUnsubmitted
Not Done

Because of differences with b'' in Python 3 :/

indygreg: Because of differences with `b''` in Python 3 :/
durin42Unsubmitted
Not Done

😭

durin42: 😭
"""Pretty print an object."""
if isinstance(o, (bytes, bytearray)):
return "b'%s'" % escapedata(o)
elif isinstance(o, list):
return '[%s]' % (b', '.join(pprint(a) for a in o))
elif isinstance(o, dict):
return '{%s}' % (b', '.join(
'%s: %s' % (pprint(k), pprint(v)) for k, v in sorted(o.items())))
elif isinstance(o, bool):
return b'True' if o else b'False'
else:
raise error.ProgrammingError('do not know how to format %r' % o)
def binary(s): def binary(s):
"""return true if a string is binary data""" """return true if a string is binary data"""
return bool(s and '\0' in s) return bool(s and '\0' in s)
def stringmatcher(pattern, casesensitive=True): def stringmatcher(pattern, casesensitive=True):
""" """
accepts a string, possibly starting with 're:' or 'literal:' prefix. accepts a string, possibly starting with 're:' or 'literal:' prefix.
returns the matcher name, pattern, and matcher function. returns the matcher name, pattern, and matcher function.

tests/test-http-protocol.t

s> Server: testing stub value\r\n s> Server: testing stub value\r\n
s> Date: $HTTP_DATE$\r\n s> Date: $HTTP_DATE$\r\n
s> Content-Type: application/mercurial-0.1\r\n s> Content-Type: application/mercurial-0.1\r\n
s> Content-Length: 30\r\n s> Content-Length: 30\r\n
s> \r\n s> \r\n
s> bookmarks \n s> bookmarks \n
s> namespaces \n s> namespaces \n
s> phases s> phases
response: bookmarks \nnamespaces \nphases response: b'bookmarks \nnamespaces \nphases '
Same thing, but with "httprequest" command Same thing, but with "httprequest" command
$ hg --verbose debugwireproto --peer raw http://$LOCALIP:$HGPORT << EOF $ hg --verbose debugwireproto --peer raw http://$LOCALIP:$HGPORT << EOF
> httprequest GET ?cmd=listkeys > httprequest GET ?cmd=listkeys
> user-agent: test > user-agent: test
> x-hgarg-1: namespace=namespaces > x-hgarg-1: namespace=namespaces
> EOF > EOF

tests/test-ssh-proto.t

i> write(10) -> 10: namespaces i> write(10) -> 10: namespaces
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 30\n o> 30\n
o> bufferedread(30) -> 30: o> bufferedread(30) -> 30:
o> bookmarks \n o> bookmarks \n
o> namespaces \n o> namespaces \n
o> phases o> phases
response: bookmarks \nnamespaces \nphases response: b'bookmarks \nnamespaces \nphases '
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(10) -> 10: namespaces i> write(10) -> 10: namespaces
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 30\n o> 30\n
o> bufferedread(30) -> 30: o> bufferedread(30) -> 30:
o> bookmarks \n o> bookmarks \n
o> namespaces \n o> namespaces \n
o> phases o> phases
response: bookmarks \nnamespaces \nphases response: b'bookmarks \nnamespaces \nphases '
$ cd .. $ cd ..
Test listkeys for bookmarks Test listkeys for bookmarks
$ hg init bookmarkrepo $ hg init bookmarkrepo
$ cd bookmarkrepo $ cd bookmarkrepo
$ echo 0 > foo $ echo 0 > foo
i> write(9) -> 9: i> write(9) -> 9:
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 0\n o> 0\n
response: response: b''
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(9) -> 9: i> write(9) -> 9:
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 0\n o> 0\n
response: response: b''
With a single bookmark set With a single bookmark set
$ hg book -r 0 bookA $ hg book -r 0 bookA
$ debugwireproto << EOF $ debugwireproto << EOF
> command listkeys > command listkeys
> namespace bookmarks > namespace bookmarks
> EOF > EOF
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 46\n o> 46\n
o> bufferedread(46) -> 46: bookA 68986213bd4485ea51533535e3fc9e78007a711f o> bufferedread(46) -> 46: bookA 68986213bd4485ea51533535e3fc9e78007a711f
response: bookA 68986213bd4485ea51533535e3fc9e78007a711f response: b'bookA 68986213bd4485ea51533535e3fc9e78007a711f'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 46\n o> 46\n
o> bufferedread(46) -> 46: bookA 68986213bd4485ea51533535e3fc9e78007a711f o> bufferedread(46) -> 46: bookA 68986213bd4485ea51533535e3fc9e78007a711f
response: bookA 68986213bd4485ea51533535e3fc9e78007a711f response: b'bookA 68986213bd4485ea51533535e3fc9e78007a711f'
With multiple bookmarks set With multiple bookmarks set
$ hg book -r 1 bookB $ hg book -r 1 bookB
$ debugwireproto << EOF $ debugwireproto << EOF
> command listkeys > command listkeys
> namespace bookmarks > namespace bookmarks
> EOF > EOF
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 93\n o> 93\n
o> bufferedread(93) -> 93: o> bufferedread(93) -> 93:
o> bookA 68986213bd4485ea51533535e3fc9e78007a711f\n o> bookA 68986213bd4485ea51533535e3fc9e78007a711f\n
o> bookB 1880f3755e2e52e3199e0ee5638128b08642f34d o> bookB 1880f3755e2e52e3199e0ee5638128b08642f34d
response: bookA 68986213bd4485ea51533535e3fc9e78007a711f\nbookB 1880f3755e2e52e3199e0ee5638128b08642f34d response: b'bookA 68986213bd4485ea51533535e3fc9e78007a711f\nbookB 1880f3755e2e52e3199e0ee5638128b08642f34d'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 93\n o> 93\n
o> bufferedread(93) -> 93: o> bufferedread(93) -> 93:
o> bookA 68986213bd4485ea51533535e3fc9e78007a711f\n o> bookA 68986213bd4485ea51533535e3fc9e78007a711f\n
o> bookB 1880f3755e2e52e3199e0ee5638128b08642f34d o> bookB 1880f3755e2e52e3199e0ee5638128b08642f34d
response: bookA 68986213bd4485ea51533535e3fc9e78007a711f\nbookB 1880f3755e2e52e3199e0ee5638128b08642f34d response: b'bookA 68986213bd4485ea51533535e3fc9e78007a711f\nbookB 1880f3755e2e52e3199e0ee5638128b08642f34d'
Test pushkey for bookmarks Test pushkey for bookmarks
$ debugwireproto << EOF $ debugwireproto << EOF
> command pushkey > command pushkey
> namespace bookmarks > namespace bookmarks
> key remote > key remote
> old > old
i> write(40) -> 40: 68986213bd4485ea51533535e3fc9e78007a711f i> write(40) -> 40: 68986213bd4485ea51533535e3fc9e78007a711f
i> write(6) -> 6: i> write(6) -> 6:
i> old 0\n i> old 0\n
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 2\n o> 2\n
o> bufferedread(2) -> 2: o> bufferedread(2) -> 2:
o> 1\n o> 1\n
response: 1\n response: b'1\n'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(40) -> 40: 68986213bd4485ea51533535e3fc9e78007a711f i> write(40) -> 40: 68986213bd4485ea51533535e3fc9e78007a711f
i> write(6) -> 6: i> write(6) -> 6:
i> old 0\n i> old 0\n
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 2\n o> 2\n
o> bufferedread(2) -> 2: o> bufferedread(2) -> 2:
o> 1\n o> 1\n
response: 1\n response: b'1\n'
$ hg bookmarks $ hg bookmarks
bookA 0:68986213bd44 bookA 0:68986213bd44
bookB 1:1880f3755e2e bookB 1:1880f3755e2e
remote 0:68986213bd44 remote 0:68986213bd44
$ cd .. $ cd ..
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 15\n o> 15\n
o> bufferedread(15) -> 15: publishing True o> bufferedread(15) -> 15: publishing True
response: publishing True response: b'publishing True'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 15\n o> 15\n
o> bufferedread(15) -> 15: publishing True o> bufferedread(15) -> 15: publishing True
response: publishing True response: b'publishing True'
Create some commits Create some commits
$ echo 0 > foo $ echo 0 > foo
$ hg add foo $ hg add foo
$ hg -q commit -m initial $ hg -q commit -m initial
$ hg phase --public $ hg phase --public
$ echo 1 > foo $ echo 1 > foo
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 4: o> bufferedreadline() -> 4:
o> 101\n o> 101\n
o> bufferedread(101) -> 101: o> bufferedread(101) -> 101:
o> 20b8a89289d80036e6c4e87c2083e3bea1586637 1\n o> 20b8a89289d80036e6c4e87c2083e3bea1586637 1\n
o> c4750011d906c18ea2f0527419cbc1a544435150 1\n o> c4750011d906c18ea2f0527419cbc1a544435150 1\n
o> publishing True o> publishing True
response: 20b8a89289d80036e6c4e87c2083e3bea1586637 1\nc4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True response: b'20b8a89289d80036e6c4e87c2083e3bea1586637 1\nc4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 4: o> bufferedreadline() -> 4:
o> 101\n o> 101\n
o> bufferedread(101) -> 101: o> bufferedread(101) -> 101:
o> 20b8a89289d80036e6c4e87c2083e3bea1586637 1\n o> 20b8a89289d80036e6c4e87c2083e3bea1586637 1\n
o> c4750011d906c18ea2f0527419cbc1a544435150 1\n o> c4750011d906c18ea2f0527419cbc1a544435150 1\n
o> publishing True o> publishing True
response: 20b8a89289d80036e6c4e87c2083e3bea1586637 1\nc4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True response: b'20b8a89289d80036e6c4e87c2083e3bea1586637 1\nc4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True'
Single draft head Single draft head
$ hg phase --public -r 2 $ hg phase --public -r 2
$ debugwireproto << EOF $ debugwireproto << EOF
> command listkeys > command listkeys
> namespace phases > namespace phases
> EOF > EOF
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 58\n o> 58\n
o> bufferedread(58) -> 58: o> bufferedread(58) -> 58:
o> c4750011d906c18ea2f0527419cbc1a544435150 1\n o> c4750011d906c18ea2f0527419cbc1a544435150 1\n
o> publishing True o> publishing True
response: c4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True response: b'c4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 58\n o> 58\n
o> bufferedread(58) -> 58: o> bufferedread(58) -> 58:
o> c4750011d906c18ea2f0527419cbc1a544435150 1\n o> c4750011d906c18ea2f0527419cbc1a544435150 1\n
o> publishing True o> publishing True
response: c4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True response: b'c4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True'
All public heads All public heads
$ hg phase --public -r 4 $ hg phase --public -r 4
$ debugwireproto << EOF $ debugwireproto << EOF
> command listkeys > command listkeys
> namespace phases > namespace phases
> EOF > EOF
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 15\n o> 15\n
o> bufferedread(15) -> 15: publishing True o> bufferedread(15) -> 15: publishing True
response: publishing True response: b'publishing True'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 15\n o> 15\n
o> bufferedread(15) -> 15: publishing True o> bufferedread(15) -> 15: publishing True
response: publishing True response: b'publishing True'
Setting public phase via pushkey Setting public phase via pushkey
$ hg phase --draft --force -r . $ hg phase --draft --force -r .
$ debugwireproto << EOF $ debugwireproto << EOF
> command pushkey > command pushkey
> namespace phases > namespace phases
i> write(6) -> 6: i> write(6) -> 6:
i> old 1\n i> old 1\n
i> write(1) -> 1: 1 i> write(1) -> 1: 1
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 2\n o> 2\n
o> bufferedread(2) -> 2: o> bufferedread(2) -> 2:
o> 1\n o> 1\n
response: 1\n response: b'1\n'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(6) -> 6: i> write(6) -> 6:
i> old 1\n i> old 1\n
i> write(1) -> 1: 1 i> write(1) -> 1: 1
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 2\n o> 2\n
o> bufferedread(2) -> 2: o> bufferedread(2) -> 2:
o> 1\n o> 1\n
response: 1\n response: b'1\n'
$ hg phase . $ hg phase .
4: public 4: public
$ cd .. $ cd ..
Test batching of requests Test batching of requests